Vaporizer



Sept. 10, 1929. J. R. REPLOGLE VAEORIZER- Filed June 1'. 1926 INI/ENTQR.

I v ATTORNEY.

Patented Sept. 10, 1929` UNITED STATE-s.

PATENT orrlcla.l

JOHN R. REPLOGLE, or DETROIT,l MICHIGAMZASSIGNOR, BY MEsNE ASSIGNMENTS,To KELvINAToR CORPORATION, or DETROIT, MICHIGAN, A CORPORATION orMICHIGAN.

VA'PORIZER.

'l This invention relates to vaporizers which form a part ofrefrigerating apparatusjand in which refrigerant vaporizes-to absorbheat from a chamber to be maintained at a predetermined low temperature.

An object of my invention is to provide a l flooded type of vaporizerwhich is formed of a plurality of sect-ions detachably secured inendwise relation, the sections .being selected from variablestandardlengths, so that a vaporizer of desired length canbeecononiically and readily formed.

Another object of the invention is to pro-5 vide a vaporizer forrefrigerating apparatus, in wluch the major portion 1s formed of arelatively small section and refrigerant area without reducing'the heattransferring capacity thereof. I

A further object of the invention is to provide a vaporizer forrefrigerating system consisting of elongated communicating sectionswhich can be readily assembled, and which will withstand the pressure ofthe refrigerant therein.

These and other objects of my invention will appear in the followingdescription of an embodiment of my invention.

In the drawings, Fig. 1 illustrates a. longitudinal sectional view of avaporizer embodying my invention. Fig. 2 is an enlarged verticalsectionalview of the same, taken on line 2 2 of Fig. 1. Fig. 3 is anenlarged vertical sectional view of the vaporizer, taken on line 3 3 ofFig. 1. Fig. 4 is an end view of the vaporizer, and Fig. 5 is anenlarged sectional view of the brace within the reduced section of thevaporizer.A

Referring to the drawings by characters of reference, the vaporizer ispreferably made up of two sections indicated at A and B,

which are removably secured together, the

section A being standard in form, and the section B being of desiredcross section and length to eliiciently transfer heat from chambers ofvarying area and length. The. section .A'of the vaporizer includes anannular cuprous casing or shell 10, which is open at both ends. An endclosure ring 11 is provided with a peripheral annular recess 12.l withinwhich one end of the casing is pressed and secured by solder 13 toprovide a leak proof connection capable of withstanding the refrigera ntpressures internally of the casing. The end closure ring ll'is providedwith a central aperture .14, which is' closed by a plate 15 re- 55inovably secured against the exterior face of vthe closure ring by bolts16. Refrigerant inlet and outlet passages 17 and 18 extend through the'closure plate 15 and couplings 18a and 19 are secured in the exteriorends'thereof 60 to provide connections for the high and low pressure'refrigerant conduits of a refrigerating system of the compressor,condenser, evaporator type. v i The plate 15 is provided with a hub 2O65 which extends through the aperture legt in teriorly of the easing 10and the refrigerant inlet. passage-1f? extends therethrough and opensinto the interior of the casing 10. The outlet end of the passage 1T isof reduced area and is controlled by a ball valve 21. A float 22 ispivotally mounted within the casing 1U upon an arm 23, which ispivotally mounted to the inwardly extending portion 2O of the closureplate. A fiat spring member 25 is secured to 7 the lower portion of thearm 23 and is arranged to maintain the ball valve 21 adjacent its seat.An outlet tube 2G is arranged to extend within the innerend of thc`passage 1S, and the open upper end thereof projects above the upperlevel of the liquid refrigerant and lubricant within the 'casing 10 andprovides an outlet for 'the refrigerant which 'vaporizes within thecasing 10. The outlet tube 2G is in open communication with the passage18, which in turn is connected by coupling 19 with the suction or returnline of the refrigerating apparatus. The tube 26 is provided adjacentits upper end with openings 27, which are ar ranged at the upper levelof the lubricant v within the casing 10.

The structure so far described is a flooded type of vaporizer, in whichliquid refrigerant .is maintained aty substantially a constant level,and lubricant of lighter specific gravity thanthe refrigerant travelsfreely through the entire circuit. Due to the differences in thespecific gravity, the major portion of 1 the lubricant in the-casing 10will float upon the refrigerant and will-flow by gravity into and formsa part of the vaporizer.

the suction conduit through the openings 27 inthe outlet tube, so thatsubstantially aconstant quantity of lubricant is .maintained within thecasing 10. The structure lso far described is substantiallythe same asthat illustrated in my pending application, Serial bld-475,344, led June6th, '1921, and the connection with a refrigerating apparatus and thefunction-and operation'of the elements so far described are fully setforth therein, anda further description is, therefore, not deemednecessary to a full understanding ofthis invention,

' A closure ring 28 is arranged at the open end of the casing 10 and isprovided with a.

peripheral annular groove 29, within which Vthe end of the casing` 10 ispressed and secured by solder 30, soy as to provide a leak-proofjoint'which will withstand the pressure ofthe refrigerant within thecasing 10 When 'expanded. The section B of the 'vaporizer is removablyattachedto the ring 28 and such' section may be ofvariousstandardlengths and diameters, so that a standard section Aerably of a. cylindrical cuprous casing or shell 31, which can be formedin desired diameters `and lengths. An annular beading' 32 is formed toextend exteriorly of the casing 31 and provides a stop vmember .for theflanged supporting ring 33, which is assembled .around the end portionof the casing. The

end 34 of the casing is flanged outwardlying 31. The .ixiier end :of thecasing'37 is -closed by a cup-shaped member 39, and the end 40 of thecasing 37 is bent'backover the edge ofthe end member'39 and is securedin leak-proof relation therewith by solder'or other suitable means. Aring 41 extends in-- teriorly of the outer ends of the casings 31 and37, and is provided with an annular peripheral groove 42, intoA whichthe ends ofthe casings 31 and 37 `are pressedandsecured by. solder 43,providing a leak proof connection for the end of thegcasing 31 and forthe end of the casing 37. The end of the ring 41 is provided with anannular flange 44, which is closed'by an end plate 45 secured to'theouter face thereof by bolts 46. The end plate 45 is provided with acentral passage 47, into which a tube '48 is secured and extends in-Wardly ofthe casing 37,-the' inner end of the against the adjacent endface, of the flangedl supporting ring and is suitably sealed .tlierelvagainst to prevent leakage of -the refrigerant.

The flanged portion 35 of the ring 33 extends *annularly therefrom andis arranged to be assembled against theend of the ring 28 of thecasing,` and suitable bolts 36 entend through the iange 35 and arescrewed into threaded openings in the ring 28 to detach- ,ably securethe section B of the vaporizer with section A.

A closed brine'containing receptacle is arranged to extend interiorly ofthe casing 3 1 ceptacle includes a cuprouscasin 37, which is preferably/annular and exten s substantially the entire length of the casing 31.The casing 37 is preferably annular in cross section and is ofa`diameter such that it will be spa-ced annularly of the casing 31. Theinnerv end of the casing is supported in such spaced relation with thecasing 31 by bosses 38, which are formed to extend -inwardly from thecas:

Such re-` tube 48 being closed.v Such tube provides a means for theinsertion of va thermometer, so that the temperature internally of thecasing 37 can be ascertained when desired.

vA- plurality of annular brace members 49 are provided atv spaced'intervals interiorly of the casing 37 an'd are arranged to bearagainstthe interior wall of the receptacle to v preventlbucklingthereof, dueto excessive pressures ,'which willexist withinthe casing 31whenunder test.-' The brace members 49 are provided with centralapertures to permit convection'of the brine withi'nthereceptacle 37 whenthe refrigerant is boiling.

The refrigerant and lubricant are constantl sustained automatically atalevel substantiallyhorizontal with the lowerportion of the openings 27in the outlet tube within the .casing 10 and the casing 31, so that,the/casing 37 is substantially surrounded and submerged in therefrigerant.

erant risinglr from the liquid refrigerant along the entire length ofthe section.

It will be seen that the structure herein described is of a'ruggednature, such that it will withstand thev pressures caused by evapora-'tion of the refrigerant, and that it can'be readily assembled and-cheaplymanufactured. The structure also'has the further advantage ofmanufacture in that a standard section A can be used and various sizesof sections B can be assembled with the sec-l tion A to suit the varioussizes of rooms and' The outlet opening 20 is preferably arranged inahorizontal plane be-` vlaw-the top ofrthe section B, so that there will'bea space above to receive vaporized refrigconditions', thus providinga simple and economical manner of manufacturing vaporiz- -ers ofdifferent sizes. B'y" utilizing a plurality of sections, one canbe ofsufiicientdiameter to contain the valve mechanism while the othersection can be reduced in diameter and with the brine receptacle thereinthe quantity of refrigerant 'required in the vaporizer is materiallyreduced." The brine receptacle in- A =ternally of the vaporizer isaffected by the temperature of the refrigerant and reacts thereon todelay the operative and inoperative periods of theI compressor operationwhen controlled byl suction pressure as set forth in my co-pendingapplication herein mentioned.

Various changes may be made in the details of the construction of theembodiment as herein described, Without departing from the invention andthe scope of the appended claims. A Y

I claim:

1. A vaporizer of the Hoodedtype comprising a pluralityof communicatingsections, one of said sections having refrigerant inlet and outletpassages in its'wall, and a/brine containing receptacle wlthin the otherof said sections and arranged in spaced relation with' the internal wallthereof.

2. A vaporizer of the flooded type compiising a pair vofcommunicatingsections secured together in 'endwise relation,'refrigerant inlet and outlet `passages extending through the Wall ofone of said sections, and a brine filled receptacleextendingtsubstantially the length ofthe other of said sections andsecured therewith in spaced relation with the internal Wall thereof,-said section Within which said brine receptacle extends being detachablysecured with the other section.

3. A vaporizer of the Hooded type coinprising a pair of communicatingsections detachably secured together in endwise relation,

said sections being of different transverse sections, the larger of saidsectionsbeing provided with inlet and outlet refrigerant passages in itsWall and having a Hoat controlled valve associated interiorly thereofWith the inlet passage, and the smaller of said sections having a brinereceptacle secured therein and arranged in spaced relation-with theinterior Wall thereof.

4. A vaporizer of the Hooded type comprising a plurality ofcommunicating sections secured together in endWise relation, a brinereceptacle within one of said sections and se- .cured thereto, and atube having a closed end extending interiorly of said brine receptacle.

5. A- vaporizer ofthe Hooded type comprising a pair of communicatingsections secured together in endwise relation, one fof said sectionsbeing relatively longer and of aller sectionthan the other section, abrine containing receptacle extending interiorly substantially the fulllength of theelongated section and spaced from the interior Wallthereof, and a plurality of spaced bracing means Within said brinecontaining receptacle to prevent buckling of said receptacle underpressure.

6. A vaporizer of the Hooded type comprising a pair of communicatingsections secured together in endwise relation, one of said sectionsbeing of smaller section than the other of said sections, a brinecontaining receptacle extending substantially the full length and spacedfrom the` interior Wall thereof, and a plurality of brace 'membersarranged in -spaced relation interiorly of said receptacle leakproofrelation with the adjacent ends of said communicating sections, andmeans for detachably securing said rings together.

8. A vaporizerof the Hooded type compris- -ing a pair of cylindricalcuprous communieating sections secured together in endwise relation, oneof said sections having refrigerant inlet and outlet passages extendingthrough a Wall thereof and means for maintaining a'constant refrigerantlevel therein, the other of said sections being of reduced section andarranged concentrically with the first mentioned'section, said reducedsection being of materially reater length thauthe other section, and arine containing receptacle secured within said smaller section andextending substantially the full length and in spaced relation With theinternal Wall thereof.

9. In mechanical refrigerating apparatus, a vaporizer of the Hooded typecomprising a pluralit of hollow sections'assembledsubstantial Y in axialrelation, the adjacent ends of said hollow sections being open, meansfor securing said open ends of said sections together in leak proofrelation, one of said sections having a refrigerant inlet and outletport, and means within one of said sections for materially reducing theinternal refrigerant capacity thereof.

10. A vaporizer structure for mechanical refrigerating apparatuscomprising 'a plurality of tubular sections arranged endwise to form alaterally extending interior chamber, the adjacent open ends of saidtubular sections providing a common inlet and outlet Ifor the passageofrefrigerant therebetween, means for securing said sections together inleak proof relation, and inlet and outlet refrigerant ports in one ofsaid sections.

11. In a mechanical refrigerating apparatus, a vaporizer connected incircuit comprising a plurality of tubular sections associated in endwiserelation to provide an, interior chamber extending in substantially ahorizontal plane, the ends of adjacent sections, being open to provide acommon passage therebetween for vliquid and vaporized refrigerant, aportion of the passage extending in a plane above the refrigerant level,means for securing said sections together, and means in one of saidsections for automatically maintaining a constant level of refrigerantin said chamber. v

12. A vaporzer .structure for mechanical refrigerat y rality ofcommunicating sections of different,

g apparatus comprising a 'pluexternal-area adapted to 4beassoeiated end-Wise to form a laterallylextending chamber, i an inlet port in thelargest section, a float controlled valve mechanism in the lar estsection for maintainingl agconstant leve of liquigl refrigerant withinand partially filling.

said chamber, a refrigerant outlet port in one of the sections above theliquid level thereinz andmeans forsecuring said sections together inleak proofrelation. 'In testimony whereof, I hereunto affix mysignature. JOHN R. REPLOGLE.

